 | Benjamin Adams Hathaway - Geography - 1883 - 134 pages
...areas in equal portions of time (3) The squares of the times it takes the planets to revolve around the sun are proportional to the cubes of their mean distances from the sun. 33. What is a radius vector? A line drawn from the sun to a planet. 34. Define- aphelion. It is that... | |
 | Franc Bangs Wilkie - Inventions - 1883 - 700 pages
...equal times ; and some years later, he discovered that the squares of the periodic times of the planets are proportional to the cubes of their mean distances from the sun. These are known as the three laws of Kepler; the last was discovered in May, 1618, and was regarded... | |
 | William Guy Peck - Astronomy - 1883 - 406 pages
...sweeps over equal areas in equal times. 3°. The squares of the times of revolution of the pla'nets are proportional to the cubes of their mean distances from the sun. These three laws would be rigorously true if the planets were material points, but in consequence of... | |
 | Titbits - 1884 - 376 pages
...occupied in its description. And 3. That the squares of the times of the revolutions of the planets are proportional to the cubes of their mean distances from the sun. This latter was discovered by Kepler in 1618. 307. — What does "franking " a letter mean ? "Franking"... | |
 | Robert Sullivan - Geography - 1884 - 510 pages
...sun from each other, they are about 5 degrees apart. The squares of the periodic times of the planets are proportional to the cubes of their mean distances from the sun. Hence, as the distance of the earth from the sun has been found by the transits of Venus to be about... | |
 | Arthur Edward Donkin - 1885 - 168 pages
...invested, and the income resulting from each investment. 9. The squares of the times of revolution of planets about the sun are proportional to the cubes of their mean distances; the time of the Earth-s revolution being taken as 365| days, find that of Venus and of Mars, their... | |
 | Thomas Hunter - Home schooling - 1884 - 670 pages
...of the Sun with the centre of the earth passes over equal spaces in equal times. (3) The squares of the times of revolution of the planets about the Sun...to the cubes of their mean distances from the sun (1571-1630). 4. He discovered the law of the pendulum and of falling bodies, and constructed a telescope... | |
 | Charles Force Deems, John Bancroft Devins - Apologetics - 1886 - 508 pages
...the sun) describes equal areas in equal times; and (3) the squares of periodic times of the planets are proportional to the cubes of their mean distances from the sun. AN INSTRUCTIVE STORY. — A man came to a dervish and said : " I will lay before you three religious... | |
 | William Thynne Lynn - Astronomy - 1889 - 164 pages
...the time of sweeping ; the third that the squares of the periodic times of their revolutions round the Sun are proportional to the cubes of their mean distances from him. The first two of these laws were shown by Newton to be necessary consequences of their being attracted... | |
 | Homer H. Moore - Apologetics - 1890 - 380 pages
...with the center of the sim passes over equal spaces in equal times. 3. The squares of the times of the revolution of the planets about the sun are proportional to the cubes of their mean distance from the sun. Kepler, by observation, discovered facts of the widest significance ; but it... | |
| |
The squares of the periods of revolution of any two planets are proportional to the cubes of their mean distances from the sun. 
